import i18n from 'i18next';
import Backend from 'i18next-http-backend';

// import LanguageDetector from 'i18next-browser-languagedetector';
import { initReactI18next } from 'react-i18next';

i18n
	// load translation using http -> see /public/locales
	// learn more: https://github.com/i18next/i18next-http-backend
	.use(Backend)
	// detect user language
	// learn more: https://github.com/i18next/i18next-browser-languageDetector
	// .use(LanguageDetector)
	// pass the i18n instance to react-i18next.
	.use(initReactI18next)
	// init i18next
	// for all options read: https://www.i18next.com/overview/configuration-options
	.init({
		fallbackLng: 'zh',
		debug: true,
		lng: 'zh', //預設語言
		interpolation: {
			escapeValue: false // not needed for react as it escapes by default
		},
		backend: {
			loadPath: function (lngs: Array<string>, namespaces: Array<string>) {
				const type = lngs[0] === 'zh' ? 'zh' : lngs[0] === 'en-US' ? 'en' : 'zh-TW';
				return `./locales/${type}/translation.json`;
			}
		}
	});

export default i18n;
